Phylum: Charophyta Family: Desmidiaceae
Cosmarium cyclicum P. Lundell 1871
West & West (1905: p. 145, pl. 58: 8-9) provide no records for the whole of Scotland. An Arctic-alpine species that prefers sub-atmophytic habitats and ephemeral water-bodies. It would seem to be quite rare and infrequently recorded.
Lundell, P.M. (1871) De Desmidiaceis, quae in Suecia inventae sunt, observationes criticae.
Kouwets, F.A.C. (in manuscript) European Flora of the Desmid Genus Cosmarium.
West, W. & West, G.S. (1905) A Monograph of the British Desmidiaceae, Volume 2.